WO2017185951A1

WO2017185951A1 - Video transmission method, base station, and system

Info

Publication number: WO2017185951A1
Application number: PCT/CN2017/079328
Authority: WO
Inventors: 倪其玲; 张长; 周国华
Original assignee: 华为技术有限公司
Priority date: 2016-04-28
Filing date: 2017-04-01
Publication date: 2017-11-02
Also published as: CN107333153B; CN107333153A

Abstract

Disclosed are a video transmission method, a base station, and a system, capable of scheduling air interface resources and/or adjusting a scheduling priority of a user equipment on the basis of bitrate information of video segments of a video source, thus balancing the air interface resources for the user equipment, and reducing the phenomenon of lagging. The method of embodiments of the present invention comprises: a base station acquires bitrate information of video segments of a video source; the base station schedules air interface resources and/or adjusts a scheduling priority of a user equipment on the basis of the bitrate information; and the base station transmits the video source to the user equipment on the basis of the scheduled air interface resources and/or the adjusted scheduling priority of the user equipment.

Description

Video transmission method, base station and system

This application claims the priority of the Chinese Patent Application filed on April 28, 2016, the Chinese Patent Application No. CN 201610278220.X, entitled "A Video Transmission Method, Base Station and System", the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a video transmission method, a base station, and a system.

Background technique

With the development and maturity of mobile network technologies, various emerging mobile services are booming. In today's mobile network business, video services occupy a large part of the network traffic. Although the current mobile communication system has achieved a significant improvement in performance compared with the previous performance, as the video service continues to increase and the market continues to pursue higher-definition video, the mobile communication system still faces the problem of air interface resources being tight, if the user equipment needs If a video service with a large amount of data is played, the user equipment needs more air interface resources to support the playback of video services with a larger amount of data. In the case of tight air interface resources, limited air interface resources are insufficient to support a large amount of data. The playback of the video service causes the card to appear in the playback process of the video service, which seriously affects the user experience.

At present, the scheduling algorithm is mainly used to perform corresponding scheduling to avoid the problem of air interface resources being tight, so as to eliminate the stutter phenomenon in video playback. At present, the main scheduling algorithms have the largest signal-to-interference ratio (English full name: Maximum Carrier to Interference ratio, English abbreviation: Max C/I), round robin (English full name: Round Robin, English abbreviation: RR) and proportional fairness (English full name: Proportional Fair, English abbreviation: PF).

However, the existing scheduling algorithm ignores the characteristics of the video service itself, that is, the video service uses the video segmentation as an independent unit to request transmission in the network, and the average bit rate in the video segmentation time obviously fluctuates, and the segmentation duration is more Short, the larger the peak-to-valley difference, that is, the amount of data of different video segments is significantly different. When the data volume of the video segment of the video service is significantly different, for the video segment with a large amount of data, more air interface resources are needed, and according to the existing scheduling algorithm, the video segment of different data volume is allocated. The air interface resources are the same. Obviously, in the process of playing video segments with a large amount of data, the existing scheduling algorithm is not enough to support the playback of video segments with a large amount of data, which is often prone to occur and affect the viewing experience. .

Summary of the invention

The embodiment of the present invention provides a video transmission method, a base station, and a system, which can allocate air interface resources according to the code rate information of the video segment of the video source and/or adjust the scheduling priority of the user equipment to balance the air interface resources of the user equipment. Reduce the phenomenon of stagnation.

In view of this, the first aspect of the present invention provides a video transmission method, including:

The existing scheduling algorithm ignores the characteristics of the video service itself, that is, there is a significant difference in the amount of data between video segments. The present invention proposes a video transmission scheme based on rate prediction of video segmentation, including:

The base station acquires code rate information of the video segment of the video source;

The base station schedules air interface resources according to the code rate information and/or adjusts a scheduling priority of the user equipment;

The base station according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment The video source is sent to the user equipment.

Optionally, the code rate information is average code rate information of the video segment, or the code rate information is data volume information of the video segment and duration information of the video segment for playing.

It can be seen that the base station acquires the code rate information of the video segment of the video source, and the base station schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment, and balances the air interface resources of the user equipment by scheduling, so that the user equipment can receive the device better. The video source, which reduces the stuttering phenomenon when the user device transmits the video source.

In some possible implementation manners, the acquiring, by the base station, the code rate information of the video segment of the video source includes: receiving, by the base station, the first signaling of the code rate information of the video segment of the video source that is sent by the core network device The code rate information is code rate information obtained by the core network device by using historical transmission information of the video source, or the code rate information is a gateway of the core network where the core network device is located. Detecting rate information obtained by the video source; or the code rate information is code rate information obtained by the core network device from a video server;

And obtaining, by the base station, code rate information of a video segment of the video source according to the first signaling.

In another possible implementation manner, the acquiring, by the base station, the code rate information of the video segment of the video source includes: receiving, by the base station, the second signaling that is sent by the user equipment and that carries the code rate information of the video segment of the video source. The code rate information is code rate information obtained by the user equipment interacting with the video server by using application layer signaling;

And obtaining, by the base station, code rate information of a video segment of the video source according to the second signaling.

In the actual application, the code rate information obtained by the core network device by using the historical transmission information of the video source is calculated by the core network device to save the code rate information of the video segment of the known first video source. When transmitting the second video source of the code rate information of the new unknown video segment, matching the data amount information of the transmitted video segments with the data amount information of the known video segment, if the matching degree is greater than The preset threshold is used to determine that the first video source and the second video source are the same video source. After determining that the first video source and the second video source are the same video source, the historical transmission information of the same video source is used to obtain a code rate. information.

Optionally, the triggering condition of the foregoing first signaling and the second signaling may be: the current instantaneous code rate is lower than, higher than the average rate, reaching a threshold or exceeding a threshold, and the current instantaneous code rate is lower than or Above an absolute threshold.

In other possible implementations, the code rate information is average rate information of each video segment of the video source; or the code rate information is a plurality of video segments of the video source. Average rate information in a preset time; or, the code rate information is average rate information of a video file of the video source.

In another possible implementation manner, when the code rate information is average rate information of each video segment of the video source, the base station acquires code rate information of a video segment of the video source, where The base station receives the average code rate information of each video segment of the video source sent by the video server; or the base station acquires the average code of each video segment of the video source by using the deep packet detection media description file MPD. Rate information, the average code rate information of each video segment of the video source is added to the MPD; or the base station receives the MPD sent by the core network device; the base station acquires the MPD The average bit rate information for each video segment of the video source.

In another possible implementation manner, before the base station schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment, the base station includes: determining, by the base station, the code of the video source according to the code rate information. Rate distribution information; the base station determines a data margin in a video buffer of the user equipment according to the code rate distribution information, the acquired amount of video data received by the user equipment, and a corresponding receiving duration; the base station Determining the location based on the data margin The cache duration of the user equipment;

The scheduling, by the base station, the air interface resource according to the code rate information, and/or the scheduling priority of the user equipment, includes: the base station scheduling the air interface resource according to the code rate information and the buffer duration, and/or adjusting the user equipment. Scheduling priority.

In another possible implementation manner, the scheduling, by the base station, the air interface resource according to the code rate information and the buffer duration includes:

Determining, by the base station, whether the user equipment will be stuck in the process of playing the video source according to the code rate information and the buffer duration; when the base station determines that the user equipment is playing the video source When a carton occurs in the process, the base station allocates air interface resources to the user equipment.

It can be seen that the rate information and the buffer duration determine whether the user equipment will be stuck in the future. If the user equipment is stuck in the future, the base station allocates air interface resources to the user equipment in advance to avoid the occurrence of the card.

In other possible implementations, the method further includes: determining, by the base station, the amount of data of the video segment and the duration of playable according to the code rate distribution information.

It can be seen that the base station can use the data volume of the predicted video segment and the duration of the playable video as one of the reference for adjusting the scheduling priority of the user equipment and scheduling the air interface resource.

In other possible implementations, the air interface resource is video data that is sent by the video server, and the base station allocates air interface resources to the user equipment, where the base station sends a video data request to the video server; The base station receives video data fed back by the video server; the base station allocates the received video data to the user equipment; or the base station notifies the user equipment to send a video data request to the video server, The user equipment is caused to receive video data fed back by the video server.

It can be seen that the base station wants to allocate the idle air interface resource allocation base station to determine the user equipment that will be stuck in the future, and the video server needs to deliver the video data.

In another possible implementation manner, the method further includes: the base station receiving, by the user equipment, a core network device, or a video server, operation information of the user equipment on the video source, where the operation information includes At least one of pause operation, jump behavior, replay, and drag playback.

It can be seen that, because the operation behavior of the user equipment has a great influence on the use of the code rate information, if the user equipment can report the operation behavior (operation information) of the user equipment to the base station in time, the invention is further improved.

A second aspect of the present invention provides a code rate adjustment method, including:

The base station acquires related information of the video stream transmission;

The base station triggers an adjustment command of the video stream rate according to the related information transmitted by the video stream;

Sending, by the base station, the adjustment command of the video stream rate to a user equipment, a core network device, or a video server;

The related information of the video stream transmission includes one or more of the following: a packet loss rate, a block error rate, a retransmission times, a packet delay, a throughput rate, an average transmission rate in a segment or a first preset time, and a sub-division rate. The average bit rate of the segment or the second preset time, the play buffer duration reported by the user equipment, or the play buffer duration of the user equipment estimated by the base station according to the throughput rate and the video stream code rate.

It can be seen that a method for triggering an adjustment command of a video stream rate according to related information transmitted by a video stream is provided, and the bit rate is adjusted, so that the user equipment can better receive the video source and reduce the jamming phenomenon.

In some possible implementations, the adjustment command of the video stream rate is an adjustment command of the request information of the video stream rate, and the method further includes: the base station is configured to carry the adjusted code rate of the video stream. The signaling of the request information is sent to the user equipment, so that the user equipment sends the adjusted request information of the video stream rate to the video server by using application layer signaling; or the base station will carry the adjusted The signaling of the video stream rate request information is sent to the core network device, so that the core network device sends the signaling to the video server.

In another possible implementation manner, the method further includes: receiving, by the base station, video segmentation request signaling sent by a user equipment; and determining, by the base station, the requested by the user equipment according to the video segmentation request signaling Whether the data volume of the video segment is greater than a preset threshold; if the data volume of the video segment requested by the user equipment is greater than a preset threshold, the base station modifies the video segment request signaling; the base station will modify The video segmentation request signaling is sent to the video server.

It can be seen that, in the case that the data volume of the video segment requested by the user equipment is large, the base station adjusts the code rate by modifying the video segmentation request signaling.

A third aspect of the present invention provides a base station, including:

An obtaining module, configured to obtain code rate information of a video segment of a video source;

a processing module, configured to schedule air interface resources according to the code rate information, and/or adjust a scheduling priority of the user equipment;

And a sending module, configured to send the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.

It can be seen that the acquiring module obtains the code rate information of the video segment of the video source, and the processing module schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment to balance the air interface resources of the user equipment, so that the user equipment is better. The video source is received, thereby reducing the stuttering phenomenon when the user equipment transmits the video source.

In some possible implementations, the acquiring module is specifically configured to receive, by the core network device, first signaling of rate information of a video segment carrying a video source, where the code rate information is the core network. And the code rate information obtained by the device by using the historical transmission information of the video source, or the code rate information is a code rate information obtained by the gateway of the core network where the core network device is located, by using the deep packet to detect the video source; Or the code rate information is rate information obtained by the core network device from the video server; and the code rate information of each video segment of the video source is obtained according to the first signaling.

In another possible implementation manner, the acquiring module is specifically configured to receive, by the user equipment, second signaling that carries rate information of each video segment of the video source, where the code rate information is Rate information obtained by the user equipment interacting with the video server by using application layer signaling; and acquiring rate information of each video segment of the video source according to the second signaling.

In other possible implementations, the acquiring module is specifically configured to: when the code rate information is average rate information of each video segment of the video source, receive a video source sent by the video server. Average rate information of each video segment; or, by means of a deep packet detection media description file MPD, obtaining average bit rate information of each video segment of the video source, where the video source is added to the MPD Average bit rate information for each video segment; or, Receiving, by the core network device, the MPD sent by the core network device, and acquiring average bit rate information of each video segment of the video source in the MPD.

In another possible implementation manner, the base station further includes: a first determining module, configured to: before the processing module schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment, according to the code The rate information is used to determine the code rate distribution information of the video source, and the data in the video buffer of the user equipment is determined according to the code rate distribution information, the acquired amount of video data received by the user equipment, and the corresponding receiving duration. a margin; determining a cache duration of the user equipment according to the data margin;

The processing module is specifically configured to schedule air interface resources according to the code rate information and the buffer duration, and/or adjust a scheduling priority of the user equipment.

In another possible implementation manner, the processing module includes: a determining unit, configured to determine, according to the code rate information and the buffer duration, whether the user equipment will appear in the process of playing the video source And an allocating unit, configured to allocate an air interface resource to the user equipment when the determining unit determines that the user equipment will be stuck in the process of playing the video source.

In another possible implementation manner, the base station further includes: a second determining module, configured to determine, according to the code rate distribution information, a data amount of the video segment and a duration of playable.

In other possible implementations, the air interface resource is video data that is sent by the video server, and the allocation unit is specifically configured to send a video data request to the video server, and receive a video that is fed back by the video server. Data data is allocated to the user equipment; or specifically, the user equipment is notified to send a video data request to the video server, so that the user equipment receives the video data fed back by the video server. .

In other possible implementations, the acquiring module is further configured to receive operation information of the user equipment, the video source, and the video server sent by the user equipment, where the operation information includes a suspension. At least one of an operation, a jump behavior, a replay, and a drag playback.

A fourth aspect of the present invention provides a base station, including:

An obtaining module, configured to acquire related information of a video stream transmission;

a triggering module, configured to trigger an adjustment command of a video stream rate according to the related information of the video stream transmission;

a first sending module, configured to send the adjustment command of the video stream rate to a user equipment, a core network device, or a video server;

It can be seen that the bit rate is adjusted so that the user equipment can better receive the video source and reduce the jamming phenomenon.

In some possible implementations, the adjustment command of the video stream rate is an adjustment command of the request information of the video stream rate, and the first sending module is further configured to: And signaling the request information to the user equipment, so that the user equipment sends the adjusted request information of the video stream rate to the video server by using application layer signaling; or, Signaling of request information of the video stream rate after the video stream rate The core network device is caused to cause the core network device to send the signaling to the video server.

In other possible implementation manners, the base station further includes:

a receiving module, configured to receive video segmentation request signaling sent by the user equipment;

a determining module, configured to determine, according to the video segmentation request signaling, whether a data volume of the video segment requested by the user equipment is greater than a preset threshold; and a processing module, configured to determine, by the determining module, that the user equipment requests The data segmentation of the video segment is greater than a preset threshold, and the video segmentation request signaling is modified. The second sending module is configured to send the modified video segmentation request signaling to the video server.

It can be seen that, in the case that the data amount of the video segment requested by the user equipment is large, the processing module adjusts the code rate by modifying the video segmentation request signaling.

A fifth aspect of the present invention provides a video transmission system, including:

a video server, a base station, and a user equipment;

The video server is configured to send a video source to the base station;

The base station is configured to receive the video source, acquire the code rate information of the video segment of the video source, schedule the air interface resource according to the code rate information, and/or adjust the scheduling priority of the user equipment; The air interface resource and/or the adjusted scheduling priority of the user equipment sends the video source to the user equipment;

The user equipment receives the video source.

In some possible implementation manners, the base station is further configured to receive, by the user equipment, a core network device, or a video server, operation information of the user equipment on the video source, where the operation information includes a pause operation, a jump At least one of a turn behavior, a replay, and a drag play.

As can be seen from the foregoing technical solutions, the embodiment of the present invention has the following advantages: the base station acquires the code rate information of the video segment of the video source, and the base station schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment to balance The air interface resource of the user equipment, so that the user equipment can receive the video source better, thereby reducing the jamming phenomenon when the user equipment transmits the video source.

DRAWINGS

1 is a system architecture diagram of an embodiment of the present invention;

2 is a schematic diagram of an embodiment of a video transmission method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of another embodiment of a video transmission method according to an embodiment of the present invention; FIG.

4 is a schematic diagram of an embodiment of a code rate adjustment method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an embodiment of a base station according to an embodiment of the present invention;

6 is a schematic diagram of another embodiment of a base station according to an embodiment of the present invention;

7 is a schematic diagram of another embodiment of a base station according to an embodiment of the present invention;

8 is a schematic diagram of another embodiment of a base station according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of an embodiment of a system according to an embodiment of the present invention; FIG.

FIG. 10 is a schematic diagram of an embodiment of a video server according to an embodiment of the present invention.

detailed description

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices. In addition, the term "and/or" in the specification and claims of the present invention is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that there is a separate existence. A, there are three cases of A and B, and B alone. In addition, the character "/" in this article indicates that the contextual object is an "or" relationship.

In order to facilitate the understanding of the embodiments of the present invention, the system architecture of the video transmission method of the present invention is described below. As shown in FIG. 1, the technology described in the present invention can be applied to the third generation mobile communication network (English name: The third Generation Mobile Telecommunication, English abbreviation: 3G), 4G and future 5G communication systems, and/or other wireless communication systems using various wireless access technologies, such as code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division A system of multiple access, single carrier frequency division multiple access and other access technologies.

The system architecture of the video transmission method of the present invention may be the architecture shown in FIG. 1. The video server involved in FIG. 1 refers to a request for opening a network port, receiving a client software connection through a network port, and establishing a connection according to the request. The act of exchanging data with the client software through the connection and exchanging data with the client software through the connection is called a "service." The base station involved in FIG. 1 is a base station in Long Term Evolution (English term: Long Term Evolution, English abbreviation: LTE), and is mainly responsible for radio resource management, QoS management, data compression, and encryption on the air interface side. The user equipment (English name: User Equipment, English abbreviation: UE) involved in FIG. 1 is a device in the LTE that accesses the network side through a base station, and may be, for example, a handheld terminal, a notebook computer, or other devices that can access the network.

The video transmission method of the present invention is described below by using specific embodiments:

Referring to FIG. 2, an embodiment of a video transmission method in an embodiment of the present invention includes:

101. The base station acquires code rate information of a video segment of the video source.

In this embodiment, the video source is requested to be transmitted in the network by using video segmentation as an independent unit. In order to be able to predict the traffic of future video segments, or to be able to determine that there may be a stuck user device in the future, the base station needs to acquire first. The code rate information of the video segment of the video source, that is, the code rate information of the video segmentation of the video source is opened to the base station, and then corresponding scheduling is performed.

Optionally, the code rate information is average code rate information of each video segment of the video source; or the code rate information is average bit rate information of multiple video segments of the video source within a preset time; or, a code rate The information is the average bit rate information of the video file of the video source.

It should be noted that the embodiment is illustrated by a video source, and may be used in other embodiments of the present invention. The at least one video source is used for example, that is, the code rate information of each video segment of the multiple video sources is open to the base station, which is not limited in the present invention.

In addition, the code rate information includes average rate information of the video segment, or the code rate information includes data amount information of the video segment and duration information of the video segment that is playable.

Optionally, when the code rate information is the average rate information of each video segment of the video source, the base station obtains the code rate information of the video segment of the video source, including:

Receiving, by the base station, average bit rate information of each video segment of the video source sent by the video server; or

Obtaining, by the base station, the average code rate information of each video segment of the video source by using the deep packet detection media description file MPD, where the average bit rate information of each video segment of the video source is added to the MPD; or

The base station receives the MPD sent by the core network device; the base station acquires average rate information of each video segment of the video source in the MPD. The specific type of the core network device is not specifically limited in the embodiment of the present invention.

102. The base station schedules air interface resources according to the code rate information and/or adjusts a scheduling priority of the user equipment.

In this embodiment, after the base station acquires the code rate information of each video segment of the video source, the base station schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment.

If the scheduling priority of a user equipment is improved, the air interface resource is preferentially sent to the user equipment, so that the user equipment receives the video source better; if the scheduling priority of a user equipment is adjusted, the scheduling priority is The level has dropped, indicating that this user equipment will not be stuck in the future, and more air interface resources can be allocated to other user equipments that may appear to be stuck in the future.

Optionally, the base station may schedule the air interface resource and/or adjust the scheduling priority of the user equipment according to at least one of a data margin, a current air interface capability, and a certain bandwidth transmission rate in the video buffer.

It should be noted that the data margin in the above video buffer can be replaced by the cache duration in the following.

It should be noted that the transmission rate of the foregoing certain bandwidth may be that the user equipment, the core network device, or the video server may request the base station to provide a certain bandwidth transmission rate in a future period by signaling.

Optionally, in a case where the video source is multiple, the base station obtains the utilization of the air interface resource according to the air interface capability. When the air interface resource is idle, the base station may determine, according to the code rate information, that the base station may be in the future. The user equipment, the base station may allocate air interface resources to the user equipment that may be stuck in the future; or when the air interface resources are relatively tight, the base station may determine, according to the code rate information, that the card not served in the cell served by the base station will not appear in the future time period. The user equipment and the user equipment that may be stuck in the future, the base station can reduce the scheduling priority of the user equipment that does not appear to be stuck in the future for a certain period of time, and improve the scheduling priority of the user equipment that may be stuck in the future. It can be understood that, by scheduling the air interface resources and/or adjusting the scheduling priority of the user equipment, the user equipment balances the air interface resources of the user equipment before transmitting the corresponding video source, which obviously reduces the number of jams and the jam time. .

103. The base station sends the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.

In this embodiment, the base station acquires the code rate information of the video segment of the video source, and the base station allocates the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment to balance the air interface resources of the user equipment, so that the user equipment is better. The receiving video source reduces the stuttering phenomenon when the user device transmits the video source.

Referring to FIG. 2, another embodiment of a video transmission method in an embodiment of the present invention includes:

201. The base station acquires code rate information of a video segment of the video source.

The code rate information of the video segment obtained by the base station to obtain the video source includes:

The base station receives the first signaling of the rate information of each video segment of the video source that is sent by the core network device, where the rate information is the rate information obtained by the core network device by using the historical transmission information of the video source; Or the code rate information is code rate information obtained by the gateway of the core network where the core network device is located, and the code rate information is obtained by the core network device from the video server;

Obtaining, by the base station, code rate information of each video segment of the video source according to the first signaling; or

Receiving, by the base station, second signaling of the code rate information of the video segment of the video source sent by the user equipment, where the code rate information is code rate information obtained by the user equipment interacting with the video server by using application layer signaling;

The base station acquires rate information of each video segment of the video source according to the second signaling.

It should be noted that the code rate information obtained by the core network device by using the historical transmission information of the video source is: the core network device saves the code rate information of the video segment of the known first video source, When transmitting the second video source of the code rate information of the new unknown video segment, matching the data amount information of the transmitted video segments with the data amount information of the known video segment, if the matching degree is greater than The preset threshold is used to determine that the first video source and the second video source are the same video source. After determining that the first video source and the second video source are the same video source, the historical transmission information of the same video source is used to obtain a code rate. information.

It should be noted that the triggering condition of the foregoing first signaling and the second signaling may be: the current instantaneous code rate is lower than, higher than the average code rate, reaching the threshold or exceeding the threshold, and the current instantaneous code rate is lower than: Or above an absolute threshold.

It should be noted that the application layer signaling may be a hypertext transfer protocol (English name: Hypertext Transfer Protocol, English abbreviation: HTTP) command, real-time transmission control protocol (English full name: Real-time Transport Control Protocol, English abbreviation: RTCP The command can also be other commands, which are not limited here. The second signaling may be a radio resource control (English name: Radio Resource Control, English abbreviation: RRC), and may be other types of signaling, which is not limited herein. After obtaining the code rate information, the user equipment may trigger RRC signaling to notify the base station.

202. The base station determines, according to the code rate information, code rate distribution information of the video source.

In this embodiment, the base station may obtain a fluctuation diagram of the code rate of each video segment according to the code rate information, and obtain a code rate distribution by reading a fluctuation pattern of the code rate of each video segment with time. information.

203. The base station determines, according to the code rate distribution information, the acquired amount of video data received by the user equipment, and the corresponding receiving duration, a data margin in the video buffer of the user equipment.

In this embodiment, after determining the complete code rate distribution information of the video source, the base station determines the data margin in the video buffer of the user equipment according to the obtained video data quantity received by the user equipment and the corresponding receiving duration.

The user equipment may send the received video data amount and the corresponding receiving duration to the base station by means of signaling.

The user equipment may play other one or more video sources or cache other one or more video sources before receiving the video source. It is assumed that before the user equipment receives the video source, the user equipment is playing the first target video source and the second target video source is cached, and the first target video source has been played for 5 minutes, and the first target video source is played for 5 minutes. The amount of data, if buffered to the 20th minute of the first video source, combined with the code rate distribution information, the amount of data of the first target video source received by the user equipment is obtained, within 5 minutes of the first target video source being played, The second target video source is buffered to the 15th minute, and combined with the code rate distribution information, the data amount of the second target video source received by the user equipment is obtained, and the data amount of the first target video source and the data amount of the second target video source are obtained. Summing, obtaining the sum of the data amount, subtracting the total amount of data minus the amount of data corresponding to the first target video source for 5 minutes, and obtaining the data margin in the video buffer of the user equipment.

204. The base station determines, according to the data margin, a buffer duration of the user equipment.

It should be noted that the buffer duration is the data margin in the video buffer of the user equipment in the time dimension, which is different from the data margin in the video buffer in the prior art, and the user equipment can be estimated by using the buffer duration in the present invention. How long the data margin in the video buffer can be played, rather than how many Mbits or Kbits of data in the prior art. Obviously, the embodiment of the present invention adopts the data margin in the video buffer in the time dimension as a reference for the scheduling of the subsequent base station, which is more intuitive and accurate.

It should be noted that, in some possible implementations, step 203 and step 204 may be combined and replaced by: determining, by the base station, the user equipment according to the code rate distribution information, the acquired data quantity received by the user equipment, and the corresponding receiving duration. The length of the cache.

205. The base station schedules the air interface resource according to the code rate information and the buffer duration, and/or adjusts the scheduling priority of the user equipment.

In this embodiment, after determining the buffer duration, the base station may allocate the air interface resource and/or adjust the scheduling priority of the user equipment according to the current air interface capability, the code rate information, and the buffer duration.

Optionally, the base station schedules the air interface resource according to the code rate information and the buffer duration:

The base station determines, according to the code rate information and the buffer duration, whether the user equipment will be stuck in the process of playing the video source;

When the base station determines that the user equipment will be stuck in the process of playing the video source, the base station allocates air interface resources to the user equipment.

The base station determines whether the user equipment may be stuck in the future according to the code rate information and the buffer duration. If the user equipment will be stuck in the future, the base station allocates air interface resources to the user equipment.

It should be noted that the base station can determine the video segmentation rate peak-to-valley information according to the code rate information, and measure the video buffer status (ie, the buffer duration) of the user equipment in the cell and the future video segmentation code when the air interface resource is relatively idle. The peak-to-valley information is pre-allocated to the user equipment in the case where it is judged that the user equipment will be stuck in the future.

Optionally, it also includes:

The base station determines the data amount of the video segment and the length of time available for playing according to the code rate distribution information.

The base station can predict the data volume of the video segment and the duration of the video segment that can be played according to the code rate distribution information.

It should be noted that the base station may use the data volume of the predicted video segment and the duration of the playable video as one of the reference for adjusting the scheduling priority of the user equipment and scheduling the air interface resource.

Optionally, the air interface resource is the video data delivered by the video server, and the base station allocates an air interface to the user equipment. Resources include:

The base station sends a video data request to the video server;

Receiving, by the base station, video data fed back by the video server;

The base station allocates the received video data to the user equipment; or,

The base station notifies the user equipment to send a video data request to the video server, so that the user equipment receives the video data fed back by the video server.

It should be noted that, in the foregoing, the solution for allocating the air interface resource to the user equipment provided by the present invention may be implemented by other schemes, which is not limited herein.

After the base station in the present invention acquires the code rate distribution information, the behavior of the user equipment has a great influence on the code rate distribution information, such as a pause operation, a jump behavior, a replay, and a drag play of the user equipment, and thus the user equipment The above events can be reported to the base station in time, which is beneficial to further improvement of the solution of the present invention. Specifically, the present invention further includes: receiving, by the base station, operation information of the user equipment sent by the user equipment, the core network device, or the video server to the video source, where the operation information includes at least a pause operation, a jump behavior, a replay, and a drag play. One.

206. The base station sends the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.

In this embodiment, the base station balances the air interface resources of the user equipment, so that the user equipment can better receive the video source, thereby reducing the jamming phenomenon when the user equipment transmits the video source.

Referring to FIG. 4, an embodiment of a code rate adjustment method in an embodiment of the present invention includes:

301. The base station acquires related information of the video stream transmission.

In this embodiment, the related information of the video stream transmission includes one or more of the following: a packet loss rate, a block error rate, a retransmission times, a packet delay, a throughput rate, an average transmission in a segment or a first preset time. The rate, the average bit rate of the segment or the second preset time, the play buffer duration reported by the user equipment, or the play buffer duration of the user equipment estimated by the base station according to the throughput rate and the video stream code rate.

302. The base station triggers an adjustment command of the video stream rate according to the related information transmitted by the video stream.

After acquiring the related information of the video stream transmission, the base station triggers the video stream rate adjustment command according to the related information.

Optionally, the video stream rate adjustment command is an adjustment command of the request information of the video stream rate, and further includes:

Sending, by the base station, the signaling of the requested information of the adjusted video stream rate to the user equipment, so that the user equipment sends the adjusted request information of the video stream rate rate by using application layer signaling. Sent to the video server;

or,

The base station sends signaling of the requested information of the adjusted video stream rate to the core network device, so that the core network device sends the signaling to the video server.

It is to be noted that after the user equipment receives the signaling of the request information of the adjusted video stream rate, the user equipment acquires the adjusted request information of the video stream rate of the signaling bearer, and the user The device sends the adjusted request information of the video stream rate to the video server by using application layer signaling.

It should be noted that after receiving the signaling of the requested information of the adjusted video stream rate, the core network device forwards the signaling to the video server, and after receiving the signaling, the video server obtains the signal. And requesting the adjusted request information of the video stream rate according to the adjusted request information of the video stream rate to perform video segmentation.

Optionally, it also includes:

Receiving, by the base station, video segmentation request signaling sent by the user equipment;

The base station modifies the video segmentation request signaling according to the obtained judgment result of the access segment to the video segmentation request information, and sends the modified video segmentation request signaling to the video server.

It can be understood that after receiving the video segmentation request signaling, the video server performs video segmentation according to the video segmentation request information.

303. The base station sends the video stream rate adjustment command to the user equipment, the core network device, or the video server.

In this embodiment, the base station may send an adjustment command of the video stream rate to any one of the user equipment, the core network device, and the video server.

It should be noted that, if the base station sends the video stream rate adjustment command to the user equipment or the core network device, after the user equipment or the core network device receives the video stream rate adjustment command, the video stream rate may be The adjustment command is forwarded to the video server. After receiving the adjustment command, the video server performs video segmentation according to the adjustment command.

In this embodiment, the code rate is adjusted so that the user equipment can better receive the video source, thereby reducing the jamming phenomenon.

Referring to FIG. 5, an embodiment of a base station in an embodiment of the present invention includes:

The obtaining module 401 is configured to acquire code rate information of a video segment of the video source.

The processing module 402 is configured to schedule air interface resources according to the code rate information and/or adjust a scheduling priority of the user equipment;

The sending module 403 is configured to send the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.

Optionally, the obtaining module 401 is configured to: when the code rate information is the average rate information of each video segment of the video source, receive the average code rate information of the video segment of the video source sent by the video server; or Acquiring average bit rate information of each video segment of the video source by using a deep packet inspection media description file MPD, where the average bit rate information of each video segment of the video source is added; or, receiving the core network device The transmitted MPD; the average bit rate information of each video segment of the video source in the MPD is obtained.

In this embodiment, the acquiring module 401 acquires the code rate information of the video segment of the video source, and the processing module 402 schedules the air interface resource according to the code rate information and/or schedules the scheduling priority of the user equipment, and balances the air interface resources of the user equipment by scheduling, Therefore, the user equipment can better receive the video source, thereby reducing the jamming phenomenon when the user equipment transmits the video source.

Referring to FIG. 6, another embodiment of a base station in an embodiment of the present invention includes:

The obtaining module 501 is configured to acquire code rate information of a video segment of the video source.

The first determining module 502 is configured to determine code rate distribution information of the video source according to the code rate information, and determine a video of the user equipment according to the code rate distribution information, the acquired amount of video data received by the user equipment, and the corresponding receiving time. The amount of data remaining in the cache; determining the cache duration of the user device based on the data margin;

The processing module 503 is configured to schedule air interface resources according to the code rate information and the buffer duration, and/or adjust a scheduling priority of the user equipment.

The sending module 504 is configured to send the video source to the user equipment.

Optionally, the obtaining module 501 is specifically configured to receive, by the core network device, first signaling of the code rate information of each video segment that carries the video source, where the code rate information is a history of the core network device passing the video source. The code rate information obtained by collecting the information statistics; or the code rate information is the code rate information obtained by the gateway of the core network where the core network device is located through the deep packet detection video source; or the code rate information is obtained by the core network device from the video server. Rate information; acquiring rate information of each video segment of the video source according to the first signaling; or specifically for receiving second rate information of each video segment of the video source that is sent by the user equipment Signaling, the code rate information is code rate information obtained by the user equipment interacting with the video server by using application layer signaling; and acquiring code rate information of each video segment of the video source according to the second signaling.

It should be noted that the foregoing application layer signaling may be an HTTP command, an RTCP command, or other commands, which are not limited herein. The second signaling may be RRC, and may be other types of signaling, which is not limited herein. After obtaining the code rate information, the user equipment may trigger RRC signaling to notify the base station. It should be noted that the trigger condition for triggering the RRC signaling to notify the base station may be: the current instantaneous code rate is lower than, higher than the average code rate, reaching the threshold or exceeding the threshold, and the current instantaneous code rate is lower or higher. An absolute threshold.

It should be noted that the buffer duration is the data margin in the video buffer of the user equipment in the time dimension, which is different from the data margin in the video buffer in the prior art, and the user equipment can be estimated by using the buffer duration in the present invention. How long the data margin in the video buffer can be played, rather than how many Mbits or Kbits of data in the prior art. Obviously, the data margin in the video buffer in the time dimension adopted by the embodiment of the present invention is more intuitive and accurate as a reference for scheduling of subsequent base stations.

In this embodiment, the processing module 503 is configured to balance the air interface resources of the user equipment, so that the user equipment can better receive the video source, thereby reducing the jamming phenomenon when the user equipment transmits the video source.

Optionally, referring to FIG. 6, the processing module 503 in this embodiment includes:

The determining unit 5031 is configured to determine, according to the code rate information and the buffer duration, whether the user equipment will be stuck in the process of playing the video source;

The allocating unit 5032 is configured to allocate a control resource to the user equipment when the determining unit 5031 determines that the user equipment will be stuck in the process of playing the video source.

The base station also includes:

The second determining module 505 is configured to determine, according to the code rate distribution information, the data amount of the video segment and the duration of the playable period.

Optionally, the air interface resource is video data delivered by the video server, and the allocating unit 5032 is configured to send a video data request to the video server, receive video data fed back by the video server, and allocate the received video data to the video data. The user equipment is used to notify the user equipment to send a video data request to the video server, so that the user equipment receives the video data fed back by the video server.

After the first determining module 502 in the present invention determines the code rate distribution information, the behavior of the user equipment has a great influence on the code rate distribution information, such as a pause operation, a replay, a drag play, and the like of the user equipment, and thus the user equipment The foregoing event can be reported to the obtaining module 501 in time to facilitate further improvement of the solution of the present invention. Specifically, the obtaining module 501 is further configured to receive, by the user equipment, the core network device, or the video server, operation information of the user equipment on the video source, where the operation information includes a pause operation, a jump behavior, a replay, and a drag play. At least one.

In this embodiment, the processing module 503 is configured to balance the air interface resources of the user equipment, so that the device can better receive the video source, thereby reducing the jamming phenomenon when the user equipment transmits the video source.

Referring to FIG. 7, another embodiment of a base station in an embodiment of the present invention includes:

The base station includes a transmitter/receiver 601, a controller/processor 602, and a communication unit 603. The transmitter/receiver 601 is configured to support the base station to send and receive messages between the user equipment, the video server, and the core network device in the foregoing embodiment. The controller/processor 602 performs various functions for communicating with user equipment, video servers, and core network devices. The code rate information for the video segmentation of the video source from the user equipment is received via the antenna, coordinated by the receiver 601, and further processed by the controller/processor 602 to schedule air interface resources and/or adjust the scheduling priority of the user equipment. After corresponding scheduling and/or adjustment, the transmitter 601 transmits the video source to the user equipment via the antenna. The controller/processor 602 also performs the processes of the base station described in Figures 2 and 3 and/or other processes of the techniques described herein. The communication unit 603 is configured to support the base station to communicate with other network entities. For example, it is used to support communication between a base station and a video server and a core network device. Specifically, the communication unit 603 may receive the code rate information of the video segment of the video source sent by the core network device, and then send the code rate information of the video segment of the video source to the user equipment. In the actual application scenario, the communication unit 603 may be a communication interface of the base station, that is, the code rate information of the video segment of the video source from the core network device is received by a communication interface of the base station, and further processed by the controller/processor 602 to schedule the air interface resource. And/or adjusting the scheduling priority of the user equipment, after the corresponding scheduling and/or adjustment, the transmitter 601 transmits the video source to the user equipment via the antenna.

It can be understood that FIG. 7 only shows a simplified design of the base station. In practical applications, the base station can include any number of transmitters, receivers, processors, controllers, communication units, etc., and all can implement the present invention. Base stations are within the scope of the present invention.

The controller/processor for performing the above described base station of the present invention may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component. Or any combination thereof. It is possible to implement or perform various illustrative logical blocks and modules described in connection with the present disclosure. The processor can also be a combination of computing functions, for example, including one or more microprocessor combinations. A combination of DSP and microprocessor, and so on.

Referring to FIG. 8, another embodiment of a base station in an embodiment of the present invention includes:

The obtaining module 701 is configured to acquire related information of the video stream transmission;

The triggering module 702 is configured to trigger an adjustment command of the video stream rate according to the related information of the video stream transmission;

The first sending module 703 is configured to send an adjustment command of the video stream rate to the user equipment, the core network device, or the video server.

The related information of the video stream transmission includes one or more of the following: a packet loss rate, a block error rate, a number of retransmissions, a packet delay, a throughput rate, an average transmission rate in a segment or a first preset time, and a segmentation. Or the average code rate in the second preset time, the play buffer duration reported by the user equipment, or the play buffer duration of the user equipment estimated by the base station according to the throughput rate and the video stream code rate.

Optionally, the adjustment command of the video stream rate is an adjustment command of the request information of the video stream rate, and the first sending module 703 is further configured to send the signaling of the request information that carries the adjusted video stream rate to User equipment, such that the user equipment sends the requested information of the adjusted video stream rate to the video server through application layer signaling; or is further used for signaling the request information carrying the adjusted video stream rate The core network device is caused to cause the core network device to send the signaling to the video server.

Optionally, the base station further includes:

The receiving module 704 is configured to receive video segmentation request signaling sent by the user equipment.

The determining module 705 is configured to determine, according to the video segmentation request signaling, whether the data volume of the video segment requested by the user equipment is greater than a preset threshold;

The processing module 706 is configured to: if the determining module 705 determines that the data volume of the video segment requested by the user equipment is greater than a preset threshold, modify the video segment request signaling;

The second sending module 707 is configured to send the modified video segment request signaling to the video server.

In another embodiment of the present invention, in hardware implementation, the function of the obtaining module 701 may be performed by one receiver, and the functions of the first sending module 703 and the second sending module 707 may be performed by one transmitter, or the module may be acquired. The functions of the first sending module 703 and the second sending module 707 can be implemented by a transceiver or a communication module. In addition, the functions of the trigger module 702 and the processing module 706 can be implemented by a processor. The base station can also include a memory for storing instructions executed by the processor.

Referring to FIG. 9, an embodiment of a video transmission system in an embodiment of the present invention includes:

Video server 801, base station 802, and user equipment 803;

The video server 801 is configured to send a video source to the base station 802;

The base station 802 is configured to receive the video source, acquire the code rate information of the video segment of the video source, schedule the air interface resource according to the code rate information, and/or adjust the scheduling priority of the user equipment; according to the scheduled air interface resource and/or the adjusted The scheduling priority of the user equipment sends the video source to the user equipment;

User equipment 803 is for receiving a video source.

Optionally, the base station 802 is further configured to receive operation information of the user equipment 802 sent by the user equipment 803, the core network device, or the video server 801 to the video source, where the operation information includes a pause operation, a jump behavior, a replay, and a drag play. At least one of them.

In this embodiment, the base station 802 performs the equalization of the air interface resources of the user equipment 803, so that the user equipment 803 can better receive the video source, thereby reducing the jamming phenomenon when the user equipment 803 transmits the video source.

Referring to FIG. 10, an embodiment of a video server in an embodiment of the present invention includes:

10 is a schematic structural diagram of a video server according to an embodiment of the present invention. The video server 900 may have a large difference due to different configurations or performances, and may include one or more central processing units (central processing). Units, CPU) 901 (eg, one or more processors) and memory 902, one or more storage media 905 (eg, one or one of the Shanghai quantity storage devices) that store application 903 or data 904. Among them, the memory 902 and the storage medium 905 may be short-term storage or persistent storage. Programs stored on storage medium 905 may include one or more modules (not shown), each of which may include a series of instruction operations in a video server. Still further, central processor 901 can be arranged to communicate with storage medium 905, executing a series of instruction operations in storage medium 902 on video server 900.

Video server 900 may also include one or more power sources 906, one or more wired or wireless network interfaces 907, one or more input and output interfaces 908, and/or one or more operating systems 909, such as Windows ServerTM, Mac. OS XTM, UnixTM, LinuxTM, FreeBSDTM and more.

The steps performed by the video server in the above embodiment may be based on the structure shown in FIG.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Claims

A video transmission method, comprising:

The base station acquires code rate information of the video segment of the video source;

The base station schedules air interface resources according to the code rate information and/or adjusts a scheduling priority of the user equipment;

The base station sends the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.
The method according to claim 1, wherein the acquiring, by the base station, the code rate information of the video segment of the video source comprises:

Receiving, by the base station, the first signaling of the code rate information of the video segment of the video source that is sent by the core network device, where the code rate information is obtained by the core network device by using the historical transmission information of the video source. The code rate information, or the code rate information is code rate information obtained by the gateway of the core network where the core network device is located, by the deep packet detecting the video source; or the code rate information is the core network device Rate information obtained in the video server;

And obtaining, by the base station, code rate information of a video segment of the video source according to the first signaling.
The method according to claim 1, wherein the acquiring, by the base station, the code rate information of the video segment of the video source comprises:

The base station receives the second signaling that is sent by the user equipment and carries the code rate information of the video segment of the video source, where the code rate information is the code rate information obtained by the user equipment interacting with the video server by using application layer signaling. ;

And obtaining, by the base station, code rate information of a video segment of the video source according to the second signaling.
The method according to claim 1, wherein the code rate information is average code rate information of each video segment of the video source; or the code rate information is a plurality of the video sources. The average rate information of the video segment in the preset time; or the code rate information is the average rate information of the video file of the video source.
The method according to claim 4, wherein when the code rate information is average rate information of each video segment of the video source, the base station acquires a code rate of a video segment of the video source. Information includes:

Receiving, by the base station, average rate information of each video segment of the video source sent by the video server;

or,

And obtaining, by the base station, the average code rate information of each video segment of the video source by using a deep packet detection medium description file MPD, where the average code rate information of each video segment of the video source is added to the MPD;

or,

Receiving, by the base station, the MPD sent by the core network device;

The base station acquires average rate information of each video segment of the video source in the MPD.
The method according to claim 1, wherein the base station before scheduling the air interface resource according to the code rate information and/or adjusting the scheduling priority of the user equipment comprises:

Determining, by the base station, code rate distribution information of the video source according to the code rate information;

Determining, by the base station, a data margin in a video buffer of the user equipment according to the code rate distribution information, the obtained amount of video data received by the user equipment, and a corresponding receiving duration;

Determining, by the base station, a buffer duration of the user equipment according to the data margin;

The scheduling, by the base station, the air interface resource according to the code rate information, and/or the scheduling priority of the user equipment, includes:

The base station schedules air interface resources according to the code rate information and the buffer duration and/or adjusts a scheduling priority of the user equipment.
The method according to claim 6, wherein the scheduling, by the base station, the air interface resource according to the code rate information and the buffer duration includes:

Determining, by the base station, whether the user equipment will be stuck in the process of playing the video source according to the code rate information and the buffer duration;

When the base station determines that the user equipment will be stuck in the process of playing the video source, the base station allocates air interface resources to the user equipment.
The method of claim 6 wherein the method further comprises:

The base station determines, according to the code rate distribution information, a data amount of the video segment and a duration of playable.
The method according to claim 7, wherein the air interface resource is video data delivered by the video server, and the base station allocates air interface resources to the user equipment, including:

The base station sends a video data request to the video server;

Receiving, by the base station, video data fed back by the video server;

The base station allocates the received video data to the user equipment; or

The base station notifies the user equipment to send a video data request to the video server, so that the user equipment receives video data fed back by the video server.
The method according to any one of claims 1 to 9, wherein the method further comprises:

Receiving, by the user equipment, the operating information sent by the user equipment, the video source, by the user equipment, the core network device, or the video server, where the operation information includes a pause operation, a jump behavior, a replay, and a drag play. At least one.
A code rate adjustment method, comprising:

The base station acquires related information of the video stream transmission;

The base station triggers an adjustment command of the video stream rate according to the related information transmitted by the video stream;

Sending, by the base station, the adjustment command of the video stream rate to a user equipment, a core network device, or a video server;

The related information of the video stream transmission includes one or more of the following: a packet loss rate, a block error rate, a retransmission times, a packet delay, a throughput rate, an average transmission rate in a segment or a first preset time, and a sub-division rate. The average bit rate of the segment or the second preset time, the play buffer duration reported by the user equipment, or the play buffer duration of the user equipment estimated by the base station according to the throughput rate and the video stream code rate.
The method according to claim 11, wherein the adjustment command of the video stream rate is an adjustment command of the request information of the video stream rate, the method further comprising:

Sending, by the base station, the signaling of the requested information of the adjusted video stream rate to the user equipment, so that the user equipment sends the adjusted request information of the video stream rate rate by using application layer signaling. Sent to the video server;

or,

The base station sends signaling of the requested information of the adjusted video stream rate to the core network device, so that the core network device sends the signaling to the video server.
The method of claim 11 wherein the method further comprises:

Receiving, by the base station, video segmentation request signaling sent by the user equipment;

Determining, according to the video segmentation request signaling, whether the data volume of the video segment requested by the user equipment is greater than a preset threshold;

If the data volume of the video segment requested by the user equipment is greater than a preset threshold, the base station modifies the video segment request signaling;

The base station sends the modified video segmentation request signaling to the video server.
A base station, comprising:

An obtaining module, configured to obtain code rate information of a video segment of a video source;

a processing module, configured to schedule air interface resources according to the code rate information, and/or adjust a scheduling priority of the user equipment;

And a sending module, configured to send the video source to the user equipment according to the scheduled air interface resource and/or the adjusted scheduling priority of the user equipment.
The base station according to claim 14, wherein the acquiring module is configured to receive, by the core network device, first signaling of code rate information of a video segment carrying a video source, where the code rate information is Rate rate information obtained by the core network device by using historical transmission information of the video source, or the code rate information is obtained by using a deep packet to detect the video source by a gateway of the core network where the core network device is located. The code rate information is the code rate information obtained by the core network device from the video server; and the code rate information of the video segment of the video source is obtained according to the first signaling.
The base station according to claim 14, wherein the acquiring module is specifically configured to receive second signaling that is sent by the user equipment and that carries the code rate information of the video segment of the video source, where the code rate information is The user equipment obtains the code rate information obtained by the user equipment by using the application layer signaling, and acquires the code rate information of the video segment of the video source according to the second signaling.
The base station according to claim 14, wherein the code rate information is average code rate information of each video segment of the video source; or the code rate information is multiple of the video source. The average rate information of the video segment in the preset time; or the code rate information is the average rate information of the video file of the video source.
The base station according to claim 17, wherein the acquiring module is configured to receive the video server when the code rate information is average code rate information of each video segment of the video source. Average rate information of each video segment of the transmitted video source; or, by means of the deep packet detection media description file MPD, the average bit rate information of each video segment of the video source is obtained, and the MPD is added Average rate information of each video segment of the video source; or, receiving the MPD sent by the core network device; acquiring average rate information of each video segment of the video source in the MPD.
The base station according to claim 14, wherein the base station further comprises:

a first determining module, configured to determine, according to the code rate information, code rate distribution information of the video source, before the processing module schedules the air interface resource according to the code rate information and/or adjusts the scheduling priority of the user equipment; Decoding the code rate distribution information, the obtained amount of video data received by the user equipment, and the corresponding receiving duration to determine a data margin in the video buffer of the user equipment; determining, according to the data margin, the user equipment Cache duration;

The processing module is specifically configured to schedule air interface resources according to the code rate information and the buffer duration, and/or adjust a scheduling priority of the user equipment.
The base station according to claim 19, wherein the processing module comprises:

a determining unit, configured to determine, according to the code rate information and the buffer duration, whether the user equipment will be stuck in the process of playing the video source;

And an allocating unit, configured to allocate an air interface resource to the user equipment when the determining unit determines that the user equipment will be stuck in the process of playing the video source.
The base station according to claim 19, wherein the base station further comprises:

And a second determining module, configured to determine, according to the code rate distribution information, a data amount of the video segment and a duration that is available for playing.
The base station according to claim 20, wherein the air interface resource is video data delivered by the video server, and the allocating unit is configured to send a video data request to the video server; and receive the video. Video data fed back by the server; the received video data is allocated to the user equipment; or specifically, the user equipment is notified to send a video data request to the video server, so that the user equipment receives the video server Feedback video data.
The base station according to any one of claims 14 to 22, wherein the acquiring module is further configured to receive, by the user equipment, a core network device or a video server, the user equipment to the video source. The operation information includes at least one of a pause operation, a jump behavior, a replay, and a drag playback.
A base station, comprising:

An obtaining module, configured to acquire related information of a video stream transmission;

a triggering module, configured to trigger an adjustment command of a video stream rate according to the related information of the video stream transmission;

a first sending module, configured to send the adjustment command of the video stream rate to a user equipment, a core network device, or a video server;

The related information of the video stream transmission includes one or more of the following: a packet loss rate, a block error rate, a retransmission times, a packet delay, a throughput rate, an average transmission rate in a segment or a first preset time, and a sub-division rate. The average bit rate of the segment or the second preset time, the play buffer duration reported by the user equipment, or the play buffer duration of the user equipment estimated by the base station according to the throughput rate and the video stream code rate.
The base station according to claim 24, wherein the adjustment command of the video stream rate is an adjustment command of the request information of the video stream rate, and the first sending module is further configured to carry the adjusted The signaling of the request information of the video stream rate is sent to the user equipment, so that the user equipment sends the adjusted request information of the video stream rate to the video server by using application layer signaling; or And signaling the request information carrying the adjusted video stream rate to the core network device, so that the core network device sends the signaling to the video server.
The base station according to claim 24, wherein the base station further comprises:

a receiving module, configured to receive video segmentation request signaling sent by the user equipment;

a determining module, configured to determine, according to the video segmentation request signaling, whether a data volume of the video segment requested by the user equipment is greater than a preset threshold;

a processing module, configured to modify the video segmentation request signaling if the determining module determines that the data volume of the video segment requested by the user equipment is greater than a preset threshold;

And a second sending module, configured to send the modified video segment request signaling to the video server.
A video transmission system, comprising:

a video server, a base station, and a user equipment;

The video server is configured to send a video source to the base station;

The base station is configured to receive the video source, acquire the code rate information of the video segment of the video source, schedule the air interface resource according to the code rate information, and/or adjust the scheduling priority of the user equipment; The air interface resource and/or the adjusted scheduling priority of the user equipment sends the video source to the user equipment;

The user equipment receives the video source.
The system according to claim 27, wherein the base station is further configured to receive operation information of the user equipment, the video source, sent by the user equipment, a core network device or a video server, the operation information, Contains at least one of a pause operation, a jump behavior, a replay, and a drag play.